Rolling Stones legend Keith Richards describes how he once set fire to the Chicago Playboy Mansion while on drugs. In his memoir, “Life,” excerpted in Rolling Stone, he relates: “[Saxophonist] Bobby [Keys] and I played it a little far when we set fire to the bathroom. Well, we didn’t, the dope did. Not our fault. Bobby and I were just sitting in the john, comfortable, nice john, sitting on the floor, and we’ve got the doc’s bag and we’re just smorgasbording. ‘I wonder what these do?’ Bong. And at a certain point . . . talk about hazy, or foggy, Bobby says, ‘It’s smoky in here.’ And I’m looking at Bobby and can’t see him. And the drapes are smoldering away; everything was just about to go off big-time . . There was a thumping on the door, waiters and guys in black suits bringing buckets of water. They get the door open and we’re sitting on the floor, our pupils very pinned. I said, ‘We could have done that ourselves. How dare you burst in on our private affair?’ “